A cyclist has been urged to come forward after a woman walking her dog died five weeks after she was hit by a bicycle.
South Wales Police is appealing for witnesses to the collision on Moorland Road in Splott on Tuesday 10 December.
Splott is a district of Cardiff in the south of the city, with a population of more than 13,000.
The 57-year-old woman was walking her dog with her husband at the time of the crash, which officers say happened sometime between 5.30pm and 6.30pm.
The woman was taken to the University Hospital of Wales in the Welsh capital, where she died on Monday.
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Police have described the cyclist, who fled the scene, as a male who was wearing a black face covering, white shirt and red tie.
The force is asking anyone with information or footage which might help its investigation to get in touch.